Process and apparatus for biological purification of effluent

Details Process and apparatus for biological purification of effluent Process and apparatus for biological purification of effluent

C - Chemistry, Metallurgy

02

F

362/17

C02F 3/14 (2006.01) B01F 3/04 (2006.01) C02F 3/12 (2006.01) C02F 3/20 (2006.01) C02F 3/26 (2006.01)

Patent

CA 1036722

ABSTRACT OF THE DISCLOSURE In an installation for the biological purifi- cation of effluent at least two basins linked with each other are used. The effluent to be purified is supplied to one basin to introduce oxygen into the effluent. The effluent enriched in this manner with oxygen is supplied after an average residence time to the second basin acting as the final purification basin. The purified water is removed from the said second basin, until the activated sludge concentration in the first basin drops below a certain value, following which the direction of operation is changed, so that the second basin functions as the activated sludge basin and the first basin as the final purification basin connected in series.

207539

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